基于隧道的全球可扩展IP-Anycast实现方法  

Tunnel-Based Approach to Scalable Global IP-Anycast

作　　者：马震远[1] 周杰[1] 张凌[1] 

机构地区：[1]华南理工大学广东省计算机网络重点实验室,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2008年第4期75-79,103,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家"973"计划资助项目(2003CB314805);国家下一代互联网示范工程资助项目(CNGI-04-13-2T);2005年粤港关键领域重点突破项目

摘　　要：现有的IP-Anycast实现方法不能在满足可扩展性的同时实现高效的最优组成员选择,为此,文中提出了一种基于隧道技术的全球可扩展IP-Anycast实现方法TGIA.该方法通过将Anycast请求沿主路径传送,利用Unicast的优点并结合IP隧道技术高效地选择了最优组成员;同时,通过有选择地扩散Anycast组成员信息控制了路由表的大小,在一定程度上解决了Anycast的可扩展性问题.TGIA保持了对上层协议和应用的透明性.仿真实验证明该方法可以准确、高效地实现IP-Anycast服务.As the existing IP-Anycast approaches can not simultaneously achieve the scalability and the efficient group member selection, this paper proposes a tunnel-based scalable global IP-Anycast approach named TGIA. TGIA, transparent to both the upper protocol and the applications, transfers the Anycast request on its main path, combines the advantages of Unicast with IP-Tunnel to efficiently select the best group member, and controls the size of routing table by flooding the Anycast server information in a small region. Thus, the scalability of Anycast is implemented to a certain degree. Simulated results have proved the correctness and effectiveness of TGIA in IP- Anycast service.

关 键 词：任意播 路由 IP隧道 体系结构 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]